src/surf/ns3/ns3_simulator.cc

   1 /* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "surf/ns3/ns3_simulator.h"
   8 #include "xbt/dict.h"
   9 #include "xbt/log.h"
  10
  11 using namespace ns3;
  12 using namespace std;
  13
  14 static const uint32_t writeSize  = 1024; // limit the amout of data to write
  15 uint8_t data[writeSize];
  16 xbt_dict_t dict_socket = NULL;
  17
  18 NS3Sim SimulatorNS3;
  19
  20 static void receive_callback(Ptr<Socket> localSocket);
  21 static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace);
  22 static void datasent_callback(Ptr<Socket> localSocket, uint32_t dataSent);
  23 static void StartFlow(Ptr<Socket> sock,
  24     const char *to,
  25     uint16_t port_number);
  26
  27 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simulator_ns3, surf,
  28                                 "Logging specific to the SURF network NS3 module");
  29
  30 // Constructor.
  31 NS3Sim::NS3Sim(){
  32 }
  33 //Destructor.
  34 NS3Sim::~NS3Sim(){
  35 }
  36
  37 /*
  38  * This function create a flow from src to dst
  39  *
  40  * Parameters
  41  *              src: node source
  42  *              dst: node destination
  43  *              port_number: The port number to use
  44  *              start: the time the communication start
  45  *              addr:  ip address
  46  *              totalBytes: number of bytes to transmit
  47  */
  48 void NS3Sim::create_flow_NS3(
  49                 Ptr<Node> src,
  50                 Ptr<Node> dst,
  51                 uint16_t port_number,
  52                 double start,
  53                 const char *addr,
  54                 uint32_t totalBytes,
  55                 void * action)
  56 {
  57         if(!dict_socket) dict_socket = xbt_dict_new();
  58         PacketSinkHelper sink ("ns3::TcpSocketFactory", InetSocketAddress (Ipv4Address::GetAny(), port_number));
  59         sink.Install (dst);
  60         Ptr<Socket> sock = Socket::CreateSocket (src, TypeId::LookupByName ("ns3::TcpSocketFactory"));
  61         MySocket *mysocket = new MySocket();
  62         mysocket->totalBytes = totalBytes;
  63         mysocket->remaining = totalBytes;
  64         mysocket->bufferedBytes = 0;
  65         mysocket->sentBytes = 0;
  66         mysocket->finished = 0;
  67         mysocket->action = action;
  68         xbt_dict_set(dict_socket,(const char*)&sock, mysocket,NULL);
  69         sock->Bind(InetSocketAddress(port_number));
  70         Simulator::Schedule (Seconds(start),&StartFlow, sock, addr, port_number);
  71 }
  72
  73 void* NS3Sim::get_action_from_socket(void *socket){
  74         return ((MySocket *)socket)->action;
  75 }
  76
  77 char NS3Sim::get_finished(void *socket){
  78         return ((MySocket *)socket)->finished;
  79 }
  80
  81 double NS3Sim::get_remains_from_socket(void *socket){
  82         return ((MySocket *)socket)->remaining;
  83 }
  84
  85 double NS3Sim::get_sent_from_socket(void *socket){
  86   return ((MySocket *)socket)->sentBytes;
  87 }
  88
  89 void NS3Sim::simulator_stop(double min){
  90         if(min > 0.0)
  91                 Simulator::Stop(Seconds(min));
  92         else
  93                 Simulator::Stop();
  94 }
  95
  96 void NS3Sim::simulator_start(void){
  97         XBT_DEBUG("Start simulator");
  98         Simulator::Run ();
  99 }
 100
 101 static void receive_callback(Ptr<Socket> localSocket){
 102   Address addr;
 103   localSocket->GetSockName (addr);
 104   InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
 105   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 106   mysocket->finished = 1;
 107
 108   //cout << "[" << Simulator::Now ().GetSeconds() << "] " << "Received [" << mysocket->totalBytes << "bytes],  from: " << iaddr.GetIpv4 () << " port: " << iaddr.GetPort () << endl;
 109         std::stringstream sstream;
 110                 sstream << Simulator::Now ().GetSeconds();
 111                 std::string s = sstream.str();
 112                 size_t size = s.size() + 1;
 113                 char * time_sec = new char[ size ];
 114                 strncpy( time_sec, s.c_str(), size );
 115   XBT_DEBUG("Stop simulator at %s seconds",time_sec);
 116   Simulator::Stop();
 117 }
 118
 119 static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace){
 120
 121         Address addr;
 122         localSocket->GetSockName (addr);
 123         InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
 124         MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 125         uint32_t totalBytes = mysocket->totalBytes;
 126         while ((mysocket->bufferedBytes) < totalBytes && localSocket->GetTxAvailable () > 0){
 127           uint32_t toWrite = min ((mysocket->remaining), writeSize);
 128           toWrite = min (toWrite, localSocket->GetTxAvailable ());
 129           int amountSent = localSocket->Send (&data[0], toWrite, 0);
 130
 131           if(amountSent < 0)
 132             return;
 133
 134           (mysocket->bufferedBytes) += amountSent;
 135           (mysocket->remaining) -= amountSent;
 136           //cout << "[" << Simulator::Now ().GetSeconds() << "] " << "Send one packet, remaining "<<  mysocket->remaining << " bytes!" << endl;
 137         }
 138         if ((mysocket->bufferedBytes) >= totalBytes){
 139                 localSocket->Close();
 140         }
 141
 142 }
 143
 144 static void datasent_callback(Ptr<Socket> localSocket, uint32_t dataSent){
 145   Address addr;
 146   localSocket->GetSockName (addr);
 147   InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
 148   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 149   mysocket->sentBytes += dataSent;
 150   //cout << "[" << Simulator::Now ().GetSeconds() << "] " << "DATASENT [" << mysocket->totalBytes << "bytes],  from: " << iaddr.GetIpv4 () << " port: " << iaddr.GetPort () << " dataSent " << dataSent <<endl;
 151 }
 152
 153
 154 static void StartFlow(Ptr<Socket> sock,
 155     const char *to,
 156     uint16_t port_number)
 157 {
 158   InetSocketAddress serverAddr (to, port_number);
 159
 160   //cout << "[" <<  Simulator::Now().GetSeconds() << "] Starting flow to " << to << " using port " << port_number << endl;
 161
 162   sock->Connect(serverAddr);
 163   sock->SetSendCallback (MakeCallback (&send_callback));
 164   sock->SetRecvCallback (MakeCallback (&receive_callback));
 165   sock->SetDataSentCallback (MakeCallback (&datasent_callback));
 166 }